Filtering device.



H. A. HILLS.

FILTBRING DEVICE.

APPLICATION FILED JUNE 22, 1912.

' Patented Oct. 13, 1914.

HENRY A. HILLS, 0E GRAND RAPIDS, MICHIGAN FILTERING DEVICE.

Specification of Le .ers Patent.

Application filed June 22, 1912. Serial No. 705,165.

' To all whom it may concern:

ed certain new and useful Improvements in Filtering Devices; and Idohereby'declare that the following is a full, clear, and exactdescription of the same-,reference being had to the accompanyingdrawings, and to the numbers of reference marked thereon, which form apart of this specification.

This invention relates to a'filtering device adapted, of course, to bebuilt of any desired size, in large or small units, but is shown moreparticularly in the form in which constructed for filtering hydro-carbonliquids, as, for example, gasolene, kerosene, or the like.

The object of the inventio-n'is to afford an exceedingly simple andcompact filter adapted to be made in small sizes, for example, infiltering the gasolene intermediate the storage tank of an internalcombustion engine to which the gasolene is delivered through the filteror in the Iargerunits as preferred, as and in connection with such othermechanisms as may be desired in purifying and filtering liquids of anykind.

It is also, an object of the invention to afford a construction ada tedfor use in sepa- It is an object of the invention also to afford aconstruction whereby the lighter liquid is displaced upwardly throughthe filter and filtering material, and in part by the heavier liquid tobe filtered.

The invention embraces numerous novel fully described.

In the drawings: Figure 1 is a central, vertical section of a deviceembodying my inv ntion, showing the filtering element pa tly inelevation. Fig. 2 is an enlarged,

fragmentary, vertical section of the filtering element. Fig. 3 is asection on line 3-3 of Fig. 1. Fig. 4 is a section on line 4 4of Fig. 1.

Asshown in the drawings: 1, indicates the casing or shell of the filter,which is shown as cylindric and externally threaded at each end thereof.An internal peripheral rib 2, affording a continuous flat, downwardlyfacing shoulder, is provided near the middle of said casing and near theupper end thereof is provided an inwardly directed peripheral flange orpartition 3, affording a central aperture therethrough, and whichinclines downwardly and inwardly at its top. Between said rib 2, andpartition 3,'is the ex- Patented Oct. 13, 1914. p

ternally threaded inlet nipple 4, adapted to v tively large aperturestherethrough extending from a point slightly below said rib 2, to nearthe threaded lower extremity thereof to afford View apertures. Fittingclosely in said casing and bearing with its upper end against a packingwasher 10, seated on the under side of'the rib 2, is a glass tube X, thelower end of which bears against a similar packing washer 11. Threadedon the lower end of the casing is a cap or lower head 12, provided withan internally threaded peripheral flange 13, for engagement with thethreaded end of the casing, and provided with an internal peripheralrib--14, affording a seat to engage the packing washer 11, to seal theend of the glass tube X. Connected centrally in said head is a drainagecook 15,

adapted to be opened to permit the escape of water and dirt from thedevice as the filter- I ing progresses.

The filtering element comprises a cylinvdric screen 16, of comparativelyclosely woven wire, having a head 17, of similar material connectedtherein. Said screen is of a diameter to pass throughthe aperture in thepartition 3, and is flared outwardly at the top to rest on the inclinedupper face of the partition, as shown in Fig. 1. Fitted in said screenis abag 18, of comparatively closely woven fabric such as cottonflannel,

the side having the nap thereon being turned outwardly. Fitting closelyin said bag of cotton flannel and distending the same against the outerWalls of the small mesh screen 16, is a coarse mesh Wire screen 19,having, as shown, an integral bottom or head therein and at its top alsoflared outwardly to correspond with the floor of the top of the outerscreen. The bag of fabric is thus closely confined within the outer finescreen and inner coarse screen, and also at the outwardly flaredportions at the top, as shown in Fig. 1. A cap or upper head 21, isthreaded on the upper end of the sleeve to close the same, a suitablepacking Washer 22, being engaged between the upper edge of the casingand the cap, as shown in Fig. l.

Rotatably secured by means of a headed screw 23, which engagestherethrough and threads into the cap at its center and under sidethereof, is a perforated clamping member 24, whichis centralized by saidscrew, and although engaged to the cap thereby, permits the cap to turnfreely while said clamping member is retained from rotation. Saidclamping member, as shown, is provided with a downwardly directed,substantially sharp edge adapted to bear against the outwardly flaredportion of the inner coarse screen and to thereby firmly clamp the upperend of the filtering element on the partition 3, to hold the same at alltimes firmly in place. A sufficient number of perforations are, ofcourse, provided through said clamping element to permit the gasolene orother hydro-carbon to'readily pass therethrough to the discharge port orpassage.

The operation is as follows: hen the inlet passage in the nipple l, isconnected with a suitable supply pipe, the liquid to be filtered isdelivered into the filter below the partition 3, and can only escapetherefrom through the outlet passage. in the nipple 7, above thepartition 3. The filtering material or element becoming saturated withthe liquid to be filtered, forexample, gasolene or kerosene or any otherliquid, said liquid passes freely therethrough, all dirt and refuse,,being caught on the fine external screen or upon the bag and the wateror heavier liquid falls to the bottom of the casing while thegasoleneor'other liquid to be filtered, rises in the bag and thence passesthrough the perforations in the clamping member 24, and thence throughthe passage in the outlet pipe 7.

Filtering may continue for a longer or shorter time without cleansingthe device, dependent, of course, upon the impurities or foreign matterin the liquid to be filtered. All dirt and, foreign solid matter fallsto the bottom of the casing as does also any water than might becontained therein, and this, together with such dirt or foreign solidmatter may be drawn off by means of the drain cook 15. Obviously, fromthe construction described, the filtering area afi'ords a very largesurface, the liquid to be filtered surrounding the same on all sides andthe bottom so that the heavier liquid, for example, water, assists indisplacing such liquid to be filtered upwardly through the device.

Numerous details of construction may be modified, dependent, of course,upon the size of the device required. \Vl1ere constructed in large, szes capable of conta ning a comparatively large quantity of the liquid'to be filtered, thegeneral construction may be varied through aconsiderable degree from that hereinbefore shown and described, whichillustrates more particularly one of the smaller sizes of such devices.I have shown, however, but a preferred form of the invention, andtherefore do not purpose limiting the patent granted on this applicationotherwise than necessitated by the prior art.

I claim as my invention:

A filter comprising a casing having an internal annular flange near itsupper end, a cylindrical closed bottom filtering element therein havingits upper edge flared and supported upon said flange and its lower endfree, a removable head for said casing, an annular clamping membercarried by said head and having a lower sharp edge adapted to clamp theupper edge of said filtering element upon said flange, and inlet-andoutlet openings for said casing disposed on opposite sides of saidflange.

In testimony whereof I have hereunto subscribed my name in the presenceof two subscribing witnesses.

HENRY A. HILLS.

- WVitnesses CHARLES /V. HILLS, J r., LAwRENcn' R-EIBSTEIN.

